Eve grew up alongside her cousin, Bitsie and her aunt Mary. Eve went to college early and studied at Yale University. However, when she was 16, both of her parents died in an accident, leaving her depressed and piled with debt. At this time, Eve joined Leviathan and later Lex Luthor. Then she infiltrated CatCo Worldwide Media as an assistant.
In 2019, Eve revealed her true alliance with Lex and became a runaway. Eve later risked her freedom to visit Bitsie and administer the Harun-El cure, saving her from cancer and giving powers. Bitsie was visited by Supergirl, Lena, and Alex, who were looking for Eve.
Later, Eve was found and kidnapped by Lena, then she was possessed by Lena's A.I. named Hope, that entered her head and took over her body. During the last battle, she was found and arrested by the D.E.O..
During the Anti-Monitor Crisis, everyone in the multiverse except for the seven Paragons, were killed in an antimatter wave by the Anti-Monitor on December 10, 2019, only to be restored a month later, after the Paragons and the Spectre created a new universe.
In the new multiverse, Eve was approached as a teen by Leviathan to be an assassin and spy of theirs, but she refused. So Leviathan killed her father and threatened to kill her mother as well if she didn't join them. Thus, Eve started to unwillingly work as an agent of Leviathan.
She was later found by Lex Luthor, who convinced her to work for him. After Eve started to work with Lex, he hired a team of Mossad agents to guard her mother 24/7; however he later revealed to Eve that they actually wait for his order to kill her mother if she ever betrays him.
Known family members
- Eve Teschmacher's mother
- Eve Teschmacher's father (deceased)
- Mary Teschmacher (Eve and Bitsie's aunt and the girls' grandaunt)
- Bitsie Teschmacher (Mary's niece, Eve's cousin and the girls' mother)
- Eve Teschmacher (Mary's niece, Bitsie's cousin and the girls' first cousin once removed)
- Two unnamed girls (Mary's grandnieces, Bitsie's daughters and Eve's first cousins once removed)